The rough always follows the smooth

The health-related benefits of physical activity are well-known. For instance, we have previously posted the popoular “23 1/2 hour”-video on the blog, showing the association between being physical active and having a lower risk of depression, anxiety and several other psychological symptoms. But physical activity is not the only health behaviour that are linked to psychological issues.

A recently published study showed that the consumption of baked goods such as buns and cakes, and fast food such as pizza, hotdogs and hamburgers, were strongly associated with depression. The study was conducted in a sample of 8964 former university students in Spain, with no depression symptoms at baseline. They were then followed through an average period of 6 months, where 493 participants developed depression or started taking antidepressants. The analysis revealed a dose-response relationship, which means that the more food that was consumed, the higher the chance of being depressed.

Girl with two donutsThe characteristics of people with the highest consume of commercial baked goods and fast food were that they were more likely to be single, less active and also have bad dietary habits, such as consuming a smaller amount of vegetables, fruit, nuts, fish and olive oil. Cigarette smoking and working more than 45 hours per week were also typical in this group.

Why do fast food and cakes increase the chance of being depressed? The authors suggest that this actually may be explained biologically: Previous research has found depression to be associated with a low-grade inflammatory status, endothelial dysfunction, worse lipid profiles and impaired insulin and glucose homeostasis. All these symptoms are at the same time associated with a high consumption of transunsaturated fatty acids (TFA) – a main ingredience in fast food and commercial baked goods. Alternative explanations could be that a high consumption of unhealthy food in most cases leads to overweight and obesity – conditions that are well known to be related with psychological problems. Likewise, the typical high-consumer was single, inactive and worked a lot. These characterisics may lead to depression as well.

Maria Henningsen, CERG

This entry was posted in Diet, In English, Lifestyle, Motivation, Research and tagged , , by CERG. Bookmark the permalink.

About CERG

The Cardiac Exercise Research Group (CERG) at the Norwegian University of Science and Technology (NTNU) seeks to identify the key mechanisms underlying the beneficial effects of physical on cardiac health in the context of disease prevention and treatment. Named the K.G. Jebsen Center for Exercise in Medicine under Professor Ulrik Wisløff's leadership in 2011, CERG uses both top-down and bottom-up approaches to combat lifestyle-related disease.

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